<html>
    <head>
        <title>Hello</title>
    </head>
    <body>
        {% if message %}
        <p style="color:red"> {{ message }} </p>
        {% endif %}
        <form action = '/signin' method = 'post'>
            <input name = 'username' type = 'text' value = "{{ username }}"/>
            <input name = 'password' type = 'password'/>
            <button type = 'submit'>Sign In</button>
        </form>
    </body>
</html>